<template>
  <div>
    <div
      v-clickoutside="hideReplyBtn"
      @click="inputFocus"
      class="my-reply"
    >
      <el-avatar
        class="header-img"
        :size="40"
        :src="myHeader"
      ></el-avatar>
      <div class="reply-info">
        <div
          tabindex="0"
          contenteditable="true"
          id="replyInput"
          spellcheck="false"
          placeholder="输入评论..."
          class="reply-input"
          @focus="showReplyBtn"
          @input="onDivInput($event)"
        >
        </div>
      </div>
      <div
        class="reply-btn-box"
        v-show="btnShow"
      >
        <el-button
          class="reply-btn"
          size="medium"
          @click="sendComment"
          type="primary"
        >发表评论</el-button>
      </div>
    </div>
    <div
      v-for="(item,i) in comments"
      :key="i"
      class="author-title reply-father"
    >
      <el-avatar
        class="header-img"
        :size="40"
        :src="item.headImg"
      ></el-avatar>
      <div class="author-info">
        <span class="author-name">{{item.name}}</span>
        <span class="author-time">{{item.time}}</span>
      </div>
      <div class="icon-btn">
        <span @click="showReplyInput(i,item.name,item.id)"><i class="iconfont el-icon-s-comment"></i>{{item.commentNum}}</span>
        <i class="iconfont el-icon-caret-top"></i>{{item.like}}
      </div>
      <div class="talk-box">
        <p>
          <span class="reply">{{item.comment}}</span>
        </p>
      </div>
      <div class="reply-box">
        <div
          v-for="(reply,j) in item.reply"
          :key="j"
          class="author-title"
        >
          <el-avatar
            class="header-img"
            :size="40"
            :src="reply.fromHeadImg"
          ></el-avatar>
          <div class="author-info">
            <span class="author-name">{{reply.from}}</span>
            <span class="author-time">{{reply.time}}</span>
          </div>
          <div class="icon-btn">
            <span @click="showReplyInput(i,reply.from,reply.id)"><i class="iconfont el-icon-s-comment"></i>{{reply.commentNum}}</span>
            <i class="iconfont el-icon-caret-top"></i>{{reply.like}}
          </div>
          <div class="talk-box">
            <p>
              <span>回复 {{reply.to}}:</span>
              <span class="reply">{{reply.comment}}</span>
            </p>
          </div>
          <div class="reply-box">

          </div>
        </div>
      </div>
      <div
        v-show="_inputShow(i)"
        class="my-reply my-comment-reply"
      >
        <el-avatar
          class="header-img"
          :size="40"
          :src="myHeader"
        ></el-avatar>
        <div class="reply-info">
          <div
            tabindex="0"
            contenteditable="true"
            spellcheck="false"
            placeholder="输入评论..."
            @input="onDivInput($event)"
            class="reply-input reply-comment-input"
          ></div>
        </div>
        <div class=" reply-btn-box">
          <el-button
            class="reply-btn"
            size="medium"
            @click="sendCommentReply(i)"
            type="primary"
          >发表评论</el-button>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
const clickoutside = {
  // 初始化指令
  bind(el, binding) {
    function documentHandler(e) {
      // 这里判断点击的元素是否是本身，是本身，则返回
      if (el.contains(e.target)) {
        return false
      }
      // 判断指令中是否绑定了函数
      if (binding.expression) {
        // 如果绑定了函数 则调用那个函数，此处binding.value就是handleClose方法
        binding.value(e)
      }
    }
    // 给当前元素绑定个私有变量，方便在unbind中可以解除事件监听
    el.vueClickOutside = documentHandler
    document.addEventListener('click', documentHandler)
  },
  update() { },
  unbind(el) {
    // 解除事件监听
    document.removeEventListener('click', el.vueClickOutside)
    delete el.vueClickOutside
  }
}
export default {
  name: 'ArticleComment',
  props: ['card'],
  data() {
    return {
      user: this.$store.state.user[0],
      btnShow: false,
      index: '0',
      replyComment: '',
      myName: sessionStorage.getItem('token'),
      myHeader: this.$store.state.user[0].headImg,
      myId: this.$store.state.user[0].id,
      to: '',
      toId: -1,
      comments: []
    }
  },
  directives: { clickoutside },
  async created() {
    console.log(this.$route.params)
    const res = await this.$http.getcomments(this.$route.params, this.$route.params.id)
    this.comments = JSON.parse(res.message[0].comments)
    if (!this.comments) {
      this.comments = []
    }
  },
  methods: {
    inputFocus() {
      var replyInput = document.getElementById('replyInput')
      replyInput.style.padding = '8px 8px'
      replyInput.style.border = '2px solid blue'
      replyInput.focus()
    },
    showReplyBtn() {
      this.btnShow = true
    },
    hideReplyBtn() {
      var replyInput = document.getElementById('replyInput')
      this.btnShow = false
      replyInput.style.padding = '10px'
      replyInput.style.border = 'none'
    },
    showReplyInput(i, name, id) {
      this.comments[this.index].inputShow = false
      this.index = i
      this.comments[i].inputShow = true
      this.to = name
      this.toId = id
    },
    _inputShow(i) {
      return this.comments[i].inputShow
    },
    async sendComment() {
      if (!this.replyComment) {
        this.$message({
          showClose: true,
          type: 'warning',
          message: '评论不能为空'
        })
      } else {
        const a = {}
        const input = document.getElementById('replyInput')
        const timeNow = new Date().getTime()
        const time = this.dateStr(timeNow)
        a.name = this.myName
        a.id = this.myId
        a.comment = this.replyComment
        a.headImg = this.myHeader
        a.time = time
        a.commentNum = 0
        a.like = 0
        a.reply = []
        this.comments.push(a)
        this.replyComment = ''
        input.innerHTML = ''
        console.log(this.comments)
        await this.$http.comments(this.comments, this.$route.params.col, this.$route.params.id)
      }
    },
    async sendCommentReply(i) {
      if (!this.replyComment) {
        this.$message({
          showClose: true,
          type: 'warning',
          message: '评论不能为空'
        })
      } else {
        const a = {}
        const timeNow = new Date().getTime()
        const time = this.dateStr(timeNow)
        a.from = this.myName
        a.to = this.to
        a.fromHeadImg = this.myHeader
        a.comment = this.replyComment
        a.time = time
        a.commentNum = 0
        a.like = 0
        this.comments[i].reply.push(a)
        this.replyComment = ''
        document.getElementsByClassName('reply-comment-input')[i].innerHTML = ''
        await this.$http.comments(this.comments, this.$route.params.col, this.$route.params.id)
      }
    },
    onDivInput: function (e) {
      this.replyComment = e.target.innerHTML
    },
    dateStr(date) {
      //获取js 时间戳
      var time = new Date().getTime()
      //去掉 js 时间戳后三位，与php 时间戳保持一致
      time = parseInt((time - date) / 1000)
      var s
      if (time < 60 * 10) { //十分钟内
        return '刚刚'
      } else if ((time < 60 * 60) && (time >= 60 * 10)) {
        //超过十分钟少于1小时
        s = Math.floor(time / 60)
        return s + '分钟前'
      } else if ((time < 60 * 60 * 24) && (time >= 60 * 60)) {
        //超过1小时少于24小时
        s = Math.floor(time / 60 / 60)
        return s + '小时前'
      } else if ((time < 60 * 60 * 24 * 30) && (time >= 60 * 60 * 24)) {
        //超过1天少于30天内
        s = Math.floor(time / 60 / 60 / 24)
        return s + '天前'
      } else {
        //超过30天ddd
        date = new Date(parseInt(date))
        return date.getFullYear() + '/' + (date.getMonth() + 1) + '/' + date.getDate()
      }
    }
  }
}
</script>
<style lang="scss" scoped>
.my-reply {
  padding: 10px;
  background-color: #fafbfc;
  .header-img {
    display: inline-block;
    vertical-align: top;
  }
  .reply-info {
    display: inline-block;
    margin-left: 5px;
    width: 90%;

    @media screen and (max-width: 1200px) {
      width: 80%;
    }

    .reply-input {
      min-height: 20px;
      line-height: 22px;
      padding: 10px 10px;
      color: #ccc;
      background-color: #fff;
      border-radius: 5px;

      &:empty:before {
        content: attr(placeholder);
      }

      &:focus:before {
        content: none;
      }

      &:focus {
        padding: 8px 8px;
        border: 2px solid blue;
        box-shadow: none;
        outline: none;
      }
    }
  }

  .reply-btn-box {
    height: 25px;
    margin: 10px 0;

    .reply-btn {
      position: relative;
      float: right;
      margin-right: 15px;
    }
  }
}

.my-comment-reply {
  margin-left: 50px;

  .reply-input {
    width: flex;
  }
}

.author-title:not(:last-child) {
  border-bottom: 1px solid rgba(178, 186, 194, 0.3);
}

.author-title {
  padding: 10px;

  .header-img {
    display: inline-block;
    vertical-align: top;
  }

  .author-info {
    display: inline-block;
    margin-left: 5px;
    width: 60%;
    height: 40px;
    line-height: 20px;

    > span {
      display: block;
      cursor: pointer;
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
    }

    .author-name {
      color: #000;
      font-size: 18px;
      font-weight: bold;
    }

    .author-time {
      font-size: 14px;
    }
  }

  .icon-btn {
    width: 30%;
    padding: 0 !important;
    float: right;

    @media screen and (max-width: 1200px) {
      width: 20%;
      padding: 7px;
    }

    > span {
      cursor: pointer;
    }

    .iconfont {
      margin: 0 5px;
    }
  }

  .talk-box {
    margin: 0 50px;

    > p {
      margin: 0;
    }

    .reply {
      font-size: 16px;
      color: #000;
    }
  }

  .reply-box {
    margin: 10px 0 0 50px;
    background-color: #efefef;
  }
}
</style>
